Brandwave

Mermaid vs Microsoft Visio:Which is more popular?

In September 2026, Microsoft Visio had more branded searches than Mermaid among diagramming software worldwide. Microsoft Visio had about 413,000 branded searches, while Mermaid had 55,300. Microsoft Visio made up 6.8% of all diagramming software searches we track, and Mermaid accounted for 0.91%. When we asked ChatGPT and Google AI Overviews about diagramming software, Mermaid appeared in three of the five answers and Microsoft Visio in two. Mermaid was mentioned before Microsoft Visio in three out of four answers that named either.

Among diagramming software worldwide in September 2026

Who do people search for more?

Microsoft Visio, about 7 searches for every 1 for Mermaid

Microsoft Visio 413K searchesMermaid 55.3K searches

Who does AI mention more?

Mermaid, mentioned in 3 of 5 answers, Microsoft Visio in 2

Mermaid in 3 of 5Microsoft Visio in 2 of 5

Who does AI recommend more?

Mermaid, named ahead of Microsoft Visio in 3 of 4 answers

Mermaid first in 3Microsoft Visio first in 1

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Top diagramming software in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Mermaid was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. Microsoft Visio was mentioned in two out of five: in one of the three ChatGPT answers and in one of the two Google AI Overviews. Mermaid was listed before Microsoft Visio in three out of four answers that named either.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. draw.io1st
  2. Lucidchart2nd
  3. Miro3rd
  4. Mermaid4th
  5. Whimsical5th
  6. Excalidraw6th
  7. Microsoft Visio7th
  8. SmartDraw8th
  9. Creately–
  10. Gliffy–

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • draw.io5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Miro5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Lucidchart5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Excalidraw3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Mermaid3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Whimsical3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Microsoft Visio2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • SmartDraw1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Creately0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Gliffy0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about diagramming software

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.

Is Mermaid or Microsoft Visio more popular in search?

This chart shows how often people search Google for Mermaid and Microsoft Visio by name. Each line represents a brand's share of searches for all ten diagramming software we track, month by month, from English-language searches worldwide.

Mermaid and Microsoft Visio among diagramming software worldwide, by month

Share of searches by month for Microsoft Visio, Mermaid. The figures are in the table below the chart.

View monthly share of searches table
Monthdraw.ioMiroExcalidrawLucidchartMicrosoft VisioSmartDrawMermaidCreatelyGliffyWhimsical
Oct 202534.1%33.3%8.2%12.4%8%1.7%1.6%0.61%0.17%0.01%
Nov 202537.3%29.8%9%11.2%8.2%1.8%1.9%0.67%0.15%0.01%
Dec 202537.3%30.1%11%9.2%8.3%1.5%1.9%0.55%0.16%0.01%
Jan 202636.5%29.3%10.7%9%9.9%1.8%2.2%0.44%0.19%0.01%
Feb 202635.6%28.5%10.5%10.7%9.7%2.1%2.1%0.53%0.18%0.02%
Mar 202636.7%29.3%10.8%11.1%8.1%1.8%1.4%0.54%0.16%0.01%
Apr 202636.9%29.5%10.8%11.1%8.1%1.5%1.5%0.44%0.13%0.01%
May 202640.5%26.6%12%10.2%7.3%1.3%1.5%0.4%0.12%0.01%
Jun 202636.6%29.5%13.2%9.4%8.1%1.2%1.6%0.3%0.11%0.02%
Jul 202635.3%28.2%15.6%9.4%8.3%1.4%1.4%0.28%0.13%0.02%
Aug 202635.5%28.2%15.6%9.5%7.9%1.8%1.3%0.28%0.13%0.01%
Sep 202637.6%30%13.5%9.3%6.8%1.5%0.91%0.3%0.09%<0.01%

How has the Mermaid and Microsoft Visio comparison changed over the last 12 months?

3 findings

How did search popularity change for diagramming software worldwide in September 2026?

2 changes

  1. In September 2026, Microsoft Visio lost share of searches among diagramming software worldwide, from 7.9% to 6.8%.

  2. Mermaid’s share of searches among diagramming software worldwide has lost ground for 3 months in a row, from 1.6% to 0.91% in September 2026.

How are branded searches counted?

8 search terms

Brandwave collects information about searches that people make online using Mermaid’s and Microsoft Visio’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

Mermaid

2 branded search terms

  • mermaid chart
  • mermaid js

Microsoft Visio

6 branded search terms

  • flowchart microsoft visio
  • microsoft visio
  • microsoft visio app
  • microsoft visio diagrams
  • microsoftvisio
  • visio

How the Brand Demand Index is measured

Other head-to-heads among diagramming software

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